Perhaps you should try some spelling variations:
sach tham » sach nha
cham duc » pham duc, cham soc, pham duy
tan vanh » tan van, tan vinh, tan thanh
vanh dai » van dai, vanh tai, lanh dao
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dai ve » dap ve, dau ve, dai va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (sach tham)) nang xa hoi. hieu ve cham duc tan vanh dai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach tham)) nang xa hoi. hieu ve cham duc tan vanh dai ve triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach tham)) nang xa hoi. hieu ve cham duc tan vanh dai ve triet*.